OK, I found it..
add this to my rc file:
alias ls ls -F --color
2010/11/30 机械唯物主义 : linjunhalida <linjunhalida@gmail.com>:
> when I use bash, ls command outputs are colored,
> but in ipython, there is no color for this command output.
> is there a way to set it? thanks.
>